What initiates the sodium-potassium pump?
A. Three sodium ions bind to the cytoplasmic side of the protein.
B. Three sodium ions are translocated out of the cell.
C. Phosphorylated pump has low affinity for sodium allowing sodium to leave and potassium to bind.
D. Two potassium ions are transported into the cell.
E. ATP binds to the protein which becomes phosphorylated (ADP is released).
A. Three sodium ions bind to the cytoplasmic side of the protein.
You might also like to view...
Certain properties of water—its cohesion, surface tension, and resistance to temperature change—are all:
A. a function of the partial negative charge on the H atoms of a water molecule. B. a function of the hydrogen bonds within a water molecule. C. a function of the hydrogen bonds between water molecules. D. a function of the non-polar covalent bonds between the H and O atoms within a water molecule.
Shawn's mother and Heather's mother are sisters. Shawn and Heather have ________ of their genes in common.
A) 1/2 B) 1/4 C) 1/8 D) 1/16
The major sign of pertussis occurs during which of the following phases of the disease?
A) Paroxysmal phase B) Incubation C) Catarrhal phase D) Convalescent phase
Which organisms accomplish most of the work of converting atmospheric nitrogen into a form usable to green plants?
A) protists B) bacteria and archaea C) viruses D) fungi